Yeah that looks like WordPress is attempting to handle the RSS as well as bbPress, so it’s definitely a deep integration issue. I’m not sure how to detangle that, but hopefully someone else can or I’ll try and have a look tomorrow.

I’ve been wondering about this. I applied the patch and had the same experience. So my question is, how do RSS feeds actually work? Should the feed be shown using the patched rss.php file immediately, or is there some time delay, or do you need to publish some content to update the feed? When you call up a feed URL in the browser, what happens?

My experience was the same when applying the patch, but then I wondered how soon I should have seen the results.

CioboMario, this is the same problem I had. The files do not contain an extra space before the <?xml but when output the error comes up. Try replacing your files with the latest versions – https://trac.bbpress.org/ticket/1181

I think I’ve created a quite strong code for the RSS. It allows plugins to apply their filters (example: smilies!!!). It fixes problems with double apersand encoding and ” ” not working well with UTF-8. It also fixes the date of items which is not valid if you use localization, even if the options array sets “false” on “localize”.

Feel free to try the code for yourself, it works with stock bbPress 1.0.2. You JUST need to put this content in your rss2.php (check the theme folder).